When writing the project today, I need to import Swagger3. The dependencies found from the Maven official website are as follows. After copying to the pom.xml folder, Maven has been unable to download the corresponding dependency package. After thinking for a while, I found that it is the local Maven settings.xml configuration. The mirror source of the file is only equipped with a public warehouse of Alibaba, so it can't be found, so I found the latest Alibaba warehouse mirror source configuration, and Maven can find it.